I 



OP PHILADELPHIA. 229 



11. A. UNIGUTTATA. — Black ; thorax rufous, with a black 

 spot ; elytra black ; two vittae and margin yellow. 



Inhabits the United States. 



Body black, impunctured : front rufous : thorax rufous ; a 

 large, black, central spot, sometimes connected with a smaller one 

 each side, yellowish or pale : elytra, with obsolete punctures, 

 black ; two equal, yellowish vittse joining at the tip, of which 

 one is subsutural, and the other originating on the humerus ; 

 exterior edge yellowish : pectus yellow : venter, margin rufous : 

 feet rufous : tarsi black. 



Length more than one-fourth of an inch. 



Var. a. Feet black; front black. [89] 



The variety is from near the Rocky Mountains. This species 

 is related to A. b-vittata, to caroliniana Fabr., and also to horti- 

 Gola, and probably to glabrata Fabr. 



TRIPLAX Latr. (Regne Animal.) 



1. T. THORACICA. — Pale rufous ; elytra black. 

 Inhabits the United States. 



Ips hicolor Melsh. Catal. 



Body pale rufous, punctured ; eyes and antennas, excepting 

 the basal joints, black : elytra with regular series of deeply im- 

 pressed punctures ; interstitial lines with a somewhat regular, 

 undulated series of smaller punctures. 



Length one-fifth of an inch. 



I change the name given by Mr. Melsheimer, as it is pre-occu- 

 pied in this genus. 



[Subsequently described as T. melanoptera Lac. — Leg.] 



2. T. SANGUiNiPENNis. — Black ; elytra and abdomen rufous. 

 Inhabits the United States. 



Tritoma hicolor Melsh. Catal. 



Body black, minutely and rather distantly punctured : an- 

 tennae, intermediate joints pale rufous : palpi whitish : elytra 

 pale rufous, with punctured striae: abdomen. pale rufous. 



Length less than one-fifth of an inch. 



The word hicolor is preoccupied in this genus. 



3. T. BiauTTATA. — Black, with a spot at the base of each 

 elytron; beneath yellowish. [90] 

 1824.] 



